Thanks guys. that's what I'm starting to think, the larger the crop the more exaggerated the sharpening will look. Yeah
@twist, I tend to add more sharpening to wildlife and landscapes than I do people (on the rare occasion I've taken them) and sports etc.
What's odd though is that I've just checked the redpoll shot I keep referring to and it has +74 sharpening and that doesn't look OTT. The other strange thing is that on my computer the tit pics look no different to the redpoll in terms of oversharpening, they've all been output the same way, all cropped similarly yet the tit pics look oversharpened on Flickr and massively over sharpened on here.